The synthesis and application of polyelectrolyte was reviewed,and influence factors on the preparation of polyelectrolyte were discussed.In addition,the progress of research about the polyelectrolyte-surfactant complexes,layers of self-assembled monolayers,micronanoelectronic polyelectrolyte capsules in drug delivery,and the application of polyelectrolyte in improving the preparation and performance of nanomaterials were introduced in detail.Efforts should be put forward to fabricate polyelectrolyte with a ...